Linked Life Data

9369942

Source:http://linkedlifedata.com/resource/pubmed/id/9369942

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1997-12-4
pubmed:abstractText
Lipopolysaccharide (LPS) is a bacterial cell component that plays multifunctional roles in inflammatory reactions, and one of these roles is that of a powerful stimulator of bone resorption. However, the mechanism by which LPS stimulates bone resorption is not yet understood. In the present study, we show, by using mouse embryonic calvarial cells, that endogenous CD14 and interleukin-1 beta (IL-1 beta) play an important role in the LPS-mediated bone resorption and that interferon-gamma (IFN-gamma) functions as a strong inhibitor of this resorption by suppressing LPS-stimulated expression of CD14 and IL-1 beta genes in the calvarial cells. We observed that LPS-stimulated differentiation of osteoclastic cells and bone resorption were markedly neutralized by anti-mouse CD14 antibody and were clearly inhibited by anti-sense CD14 oligonucleotide treatment. In addition, because LPS stimulated CD14 gene expression in the calvarial cells, these observations demonstrate the precise role of endogenous CD14 in LPS-stimulated differentiation of osteoclastic cells and bone resorption. However, the stimulation of the differentiation of osteoclastic cells and bone resorption was also inhibited by anti-mouse IL-1 beta antibody. Interestingly, anti-sense CD14 oligonucleotide inhibited LPS-stimulated expression of the IL-1 beta gene in the calvarial cells. These observations suggest a functional role of endogenous CD14 in LPS-stimulated expression of the IL-1 beta gene in the cells. Because IFN-gamma is a potent inhibitor of bone resorption stimulated by IL-1, in additional experiments, we examined whether IFN-gamma is able to inhibit LPS-stimulated differentiation of osteoclastic cells and bone resorption. We found that IFN-gamma inhibited these stimulations by suppressing CD14 and IL-1 beta genes in the calvarial cells. The present study thus clearly demonstrates a functional role of endogenous CD14 in LPS-stimulated bone resorption.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-9541
pubmed:author
pubmed:issnType
Print
pubmed:volume
173
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
301-9
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:9369942-Acid Phosphatase, pubmed-meshheading:9369942-Animals, pubmed-meshheading:9369942-Antibodies, pubmed-meshheading:9369942-Antigens, CD14, pubmed-meshheading:9369942-Biological Markers, pubmed-meshheading:9369942-Bone Resorption, pubmed-meshheading:9369942-Cells, Cultured, pubmed-meshheading:9369942-Embryo, Mammalian, pubmed-meshheading:9369942-Escherichia coli, pubmed-meshheading:9369942-Gene Expression Regulation, pubmed-meshheading:9369942-Interferon-gamma, pubmed-meshheading:9369942-Interleukin-1, pubmed-meshheading:9369942-Isoenzymes, pubmed-meshheading:9369942-Lipopolysaccharides, pubmed-meshheading:9369942-Mice, pubmed-meshheading:9369942-Mice, Inbred ICR, pubmed-meshheading:9369942-Oligonucleotides, Antisense, pubmed-meshheading:9369942-Recombinant Proteins, pubmed-meshheading:9369942-Skull
pubmed:year
1997
pubmed:articleTitle
Functional role of endogenous CD14 in lipopolysaccharide-stimulated bone resorption.
pubmed:affiliation
Department of Oral Microbiology, Meikai University School of Dentistry, Saitama, Japan.
pubmed:publicationType
Journal Article